Question

упростите выражение
2x²-(3x+2y)(3x-2y)

Answer 1

$2x {}^{2} - (3x + 2y)(3x - 2y) \\2x {}^{2} - ( 9x {}^{2} - 4y {}^{2} ) \\ 2x { - 9x {}^{} }^{2} + 4y {}^{2} \\ - 7x {}^{2} { + 4y {}^{} }^{2}$

Answer 2

2x²-(3x+2У)(3X-2У)=2X²-(9X²-4У²)=2x²-9x²+4У²=-7X²+4У²